staging: rtl8723bs: put parentheses on macro with complex values in include/hal_com.h

fix the following checkpatch warning:

ERROR: Macros with complex values should be enclosed in parentheses
187: FILE: drivers/staging/rtl8723bs/include/hal_com.h:187:
+#define PageNum_128(_Len)
                (u32)(((_Len)>>7) + ((_Len)&0x7F ? 1:0))
Signed-off-by: NFabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/3d187b860c3a104b00e97543390b2bbe3f2caa24.1616854134.git.fabioaiuto83@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/include/hal_com.h

@@ -180,7 +180,7 @@ enum rt_media_status {
 #define TX_SELE_NQ			BIT(2)		/*  Normal Queue */
 #define TX_SELE_EQ			BIT(3)		/*  Extern Queue */
 
-#define PageNum_128(_Len)		(u32)(((_Len)>>7) + ((_Len)&0x7F ? 1:0))
+#define PageNum_128(_Len)		((u32)(((_Len)>>7) + ((_Len)&0x7F ? 1:0)))
 
 u8 rtw_hal_data_init(struct adapter *padapter);
 void rtw_hal_data_deinit(struct adapter *padapter);